Low level memory management

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C++ Standard Library
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Utilities library
Dynamic memory management
Low level memory management Allocators allocator allocator_traits (C++11) scoped_allocator_adaptor (C++11) Uninitialized storage uninitialized_copy uninitialized_copy_n (C++11) uninitialized_fill uninitialized_fill_n Smart pointers unique_ptr (C++11) shared_ptr (C++11) weak_ptr (C++11) enable_shared_from_this (C++11) bad_weak_ptr (C++11) auto_ptr (deprecated) Garbage collection support declare_reachable (C++11) undeclare_reachable (C++11) declare_no_pointers (C++11) undeclare_no_pointers (C++11) pointer_safety (C++11) Miscellaneous pointer_traits (C++11) address_of (C++11) align (C++11) C Library malloc calloc realloc free
Low level memory management
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Contents 1 Allocation 2 Deallocation 3 Miscellaneous 3.1 Classes 3.2 Types 3.3 Functions 3.4 Objects

[edit] Allocation

The new expression is a language builtin which is the only way to initialize objects initialize objects in dynamically obtained memory. The memory is acquired by an operator new, new[] (allocation functions).

[edit] Deallocation

The delete expression is used to destruct objects previously initialized by the new expression and deallocate memory after that. For deallocation the delete expression uses operator delete, delete[] (deallocation functions).

Note, that it is possible to explicitly call the destructor of an object and deallocation function separately, if required.

[edit] Miscellaneous

The <new> header contains declarations of default allocation and deallocation functions (note that these functions are implicitly defined in each translation unit). Also several utility functions, types and objects are declared

This section is incomplete

Classes
bad_alloc	exception thrown when memory allocation fails (class)
bad_array_new_length (C++11)	exception thrown on allocation of array with greater than implementation supported, or negative length (class)
nothrow_t	tag type used to select an non-throwing allocation function (class)
Types
new_handler (C++11)	function pointer type, used in set_new_handler() (class)
Functions
set_new_handler (C++11)	sets a function which is called when an allocation function fails to obtain more memory to the free memory pool (function)
Objects
nothrow	an object of type nothrow_t used to select an non-throwing allocation function (constant)